Blue knuckle

Megan McCain’s ginger tattoos

Have you ever heard of a blue knuckle? Check out McCain’s finger.

by Butchtita June 13, 2018

knuckle hunter

single male that constantly searches for female companion to lay

"That boy ain't no gentleman, he's a knuckle hunter!"

by chains666 April 03, 2009

fuck knuckle

A slang term for a dumb mother fucker who really does not understand they are a dumb mother fucker.

After a lame conversation I had to say, “He is such a fuck knuckle”.

by Wayne Schlinger & Kevski September 24, 2021

Fuck Knuckle

The second knuckle of any digit when inserted into an orifice in a sexual manner.

I was fingdipin' this girl to the fuck knuckle after the baseball game the other day.

by elcapitandeganja October 04, 2013

Fuck Knuckles

(FUCK KNUCKLES) slang expression used to describe something unexpected, usually in a loud manner.****** It was just submitted and was just submitted and accepted but my phone dropped the lettet K, so it apoeared as Fuck Knucles. So sorry about that********

Fuck Knuckles that really hury

by Tabago's mom March 31, 2019

Fuck-knuckle

A more poignant or harsher word for the abusing the common wanker/tryhard/yuppie douche-canoe

You're porno movies are on the shelf next to that fuck-knuckle with his shirty goatee in the corner

by Marty's ass September 25, 2020

Fuck Knuckle

A man with such a small dick that all it feels like when he fucks a woman is him fucking her with the knuckle on his fist.

HER: Enough playing around stick it in already
HIM: What you talking about Willis? It is in!
HER: I should have known you'd be a fuck knuckle.

by Cereal Killer Bitch March 20, 2017